Navas-Suárez P E, Díaz-Delgado J, Fernandes-Santos R C, Testa-José C, Silva R, Sansone M, Medici E P, Catão-Dias J L
Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Avenida Professor Orlando Marques de Paiva 87, São Paulo, Brazil.
Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Avenida Professor Orlando Marques de Paiva 87, São Paulo, Brazil.
J Comp Pathol. 2019 Jul;170:34-45. doi: 10.1016/j.jcpa.2019.05.004. Epub 2019 Jun 12.
The lowland tapir (Tapirus terrestris) is the largest land mammal in South America. The species faces steady population decline due to poaching, habitat loss and fragmentation, road-kill, pesticide pollution, competition with domestic livestock and fires, among other threats. The lowland tapir is currently listed as vulnerable to extinction. Little information is available about natural disease processes for the species. This study aimed to report the pathological findings recorded in a cohort of 35 lowland tapirs killed by motor vehicle collision (MVC) on highways of Mato Grosso do Sul State, Brazil, between 2015 and 2018. The main gross pathological findings were those associated with MVC, primarily involving skeletal fractures and internal multiorgan damage with extensive bleeding and/or severe central nervous system injury. The most prevalent concurrent histopathological findings, unrelated to the cause of death, were: adrenal gland degeneration, necrosis and loss of fascicular and reticular cells with replacement fibrosis and cortical atrophy (9/15; 60%); interstitial pneumonia (20/34; 59%); glossitis (9/24; 38%); pulmonary anthracosis (12/34; 35%); colitis (9/28; 32%); and cholangitis/pericholangitis (9/35; 26%). The aetiopathogeneses and clinicopathological significance of some of these findings are unclear; however, parasitic infections appear to be common. Our results highlight the importance of wildlife health information obtained through the study of carcasses of roadkills.
低地貘（Tapirus terrestris）是南美洲最大的陆地哺乳动物。由于偷猎、栖息地丧失和破碎化、道路致死、农药污染、与家畜竞争以及火灾等威胁，该物种面临着种群数量的持续下降。低地貘目前被列为易危物种。关于该物种自然疾病过程的信息很少。本研究旨在报告2015年至2018年期间在巴西南马托格罗索州高速公路上因机动车碰撞（MVC）而死亡的35只低地貘的病理检查结果。主要的大体病理检查结果与机动车碰撞有关，主要包括骨骼骨折和内部多器官损伤，伴有广泛出血和/或严重的中枢神经系统损伤。与死亡原因无关的最常见的并发组织病理学检查结果为：肾上腺变性、坏死，束状和网状细胞丢失，伴有替代性纤维化和皮质萎缩（9/15；60%）；间质性肺炎（20/34；59%）；舌炎（9/24；38%）；肺炭末沉着症（12/34；35%）；结肠炎（9/28；32%）；胆管炎/胆管周围炎（9/35；26%）。其中一些检查结果的病因和临床病理意义尚不清楚；然而，寄生虫感染似乎很常见。我们的结果强调了通过对路杀动物尸体的研究获得野生动物健康信息的重要性。
